xml反序列化，请圣人帮忙啊

public partial class Default2 : System.Web.UI.Page{    protected void Page_Load(object sender, EventArgs e)    {        string strPath = "D:\\xx.xml";        /**        //序列化        UserInfo user = new UserInfo("Ranen",30);        XmlSerializer xml = new XmlSerializer(typeof(UserInfo));        FileStream fs = File.Create(strPath);        xml.Serialize(fs, user);        fs.Close();         * */        //反序列化        XmlSerializer xml = new XmlSerializer(typeof(UserInfo));        FileStream fs = File.OpenRead(strPath);        UserInfo user = xml.Deserialize(fs) as UserInfo;    }}[Serializable]public class UserInfo{    public UserInfo() { }    public UserInfo(string userName ,int age)    {        UserName = userName;        Age = age;    }    private string _UserName;    [XmlAttribute("UserName")]    public string UserName    {        get { return _UserName; }        set { _UserName = value; }    }    private int _Age;    [XmlAttribute("Age")]    public int Age    {        get { return _Age; }        set { _Age = value; }    }}
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C# code
    public class cameras    {        [XmlElement("camera")]        public camera[] camera;    }    public class camera    {        [XmlAttribute("id")]        public string id { get; set; }        [XmlAttribute("name")]        public string name { get; set; }        [XmlAttribute("url")]        public string url { get; set; }        [XmlAttribute("type")]        public string type { get; set; }        [XmlAttribute("NATTraserval")]        public string NATTraserval { get; set; }        [XmlAttribute("user")]        public string user { get; set; }        [XmlAttribute("pwd")]        public string pwd { get; set; }        [XmlAttribute("discribe")]        public string discribe { get; set; }        [XmlAttribute("enable")]        public string enable { get; set; }    }           cameras c = new cameras();            c.camera = new camera[2] {                 new camera() { id = "1", name = "csdn", url = "www.csdn.com", type = "csdn", NATTraserval = "csdn", user = "csdnuser", pwd = "csdnpwd", discribe = "csdndiscribe", enable = "1" },                new camera() { id = "2", name = "cnblogs", url = "www.cnblogs.com", type = "cnblogs", NATTraserval = "cnblogs", user = "cnblogsuser", pwd = "cnblogspwd", discribe = "cnblogsdiscribe", enable = "2" }};            XmlSerializer xml = new XmlSerializer(typeof(cameras));            FileStream fs = new FileStream(@"E:\xml.xml", FileMode.Create, FileAccess.Write);            xml.Serialize(fs, c);            fs.Close();            fs.Dispose();